We're dividing 70658 by 66 
The aim is to understand the frequency of 66 in 70658.

Going ahead to step 1:
When dividing 7 by 66, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 66

On to step 2:
When dividing 70 by 66, we get 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 66 away from 70, we end up with 4.
Bring next digit (6) of the dividend behind the 4 and repeat the process: 46 / 66

Going ahead to step 3:
46 divided by 66 is 0 with a remainder of 46.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 46 and we're left with 46.
Take the next digit (5) from the dividend and append it to 46, then repeat: 465 / 66

Going ahead to step 4:
If we divide 465 by 66, we get 7 and a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 107.0
Subtract 462 from 465 to get 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 66

Advancing to step 5:
38 divided by 66 is 0 with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 1070.0
If we subtract 0 from 38, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 6:
66 can be fit into 380 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 1070.5
Subtracting 330 from 380 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 7:
66 goes into 500 7 times with a remainder of 38.
The next digit of our result is 7. 
Result so far: 1070.57
Subtract 462 from 500 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 8:
The number 66 fits into 380 5 times, leaving a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 1070.575
If we subtract 330 from 380, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 9:
66 can be fit into 500 7 times, resulting in a remainder of 38.
Use 7 as the next digit of our solution. 
Result so far: 1070.5757
Subtracting 462 from 500 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 10:
66 can be fit into 380 5 times, resulting in a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 1070.57575
Subtract 330 from 380 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 11:
The number 66 fits into 500 7 times, leaving a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 1070.575757
Deduct 462 from 500 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 12:
380 divided by 66 is 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 1070.5757575
Subtract 330 from 380 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 13:
66 goes into 500 7 times with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 1070.57575757
The remainder is 38 after subtracting 462 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 1070.57575757 with a remaining 3.8e-08.